Provided is an adhesive application device that applies an adhesive onto each of sequentially conveyed paper sheets, the device including: a device frame; a bonding member that delivers the adhesive for bonding the paper sheets to each other; a plurality of bonding units that are arranged in a sheet width direction and each have the bonding member; a support member that supports the bonding units on the device frame so as to be movable between a bonding position at which each bonding unit presses its bonding member to apply the adhesive onto the paper sheet and a separated position separated from the bonding position; and a moving member that moves the plurality of bonding units to the bonding position with timing shifted. Thus, it is possible to move the bonding units with a smaller drive force than in a case where the bonding units are moved simultaneously. Further, it is possible to reduce, even if the twist or wrinkles occur in the paper sheet in an initial pressing operation, the twist or wrinkles by utilizing a time lag up to the next pressing operation of the bonding units, thereby allowing adhesive application to be performed more reliably.
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